Blow-off trap



sept 14,1926. 1,599,426

A1:. R. MADsEN fsm-orf' TRAP rund oct. 22. 1923 l el figg 101g mmm g.

Patented Sept, 14, 19.26.

UNITED STATES CHRISTIAN R. MADSEN,

PATENT orifice. f

orV DODGE CITY, Kansas.' Y"

BLOW-OFF TRAP.

means so positioned and adapted to receive the hot Water which is forcibly discharged from locomotives -when the blow-off` coc rs are opened, that the force of the dischargingI hot water will be destroyed, the water collected and conducted to a suitable waste discharge leading to anydesired point orv connected with the sewer. Y x .y

Another object of the invention is to pro vide aconstruction adapted to withstand the action ofthe forcibly discharged hot water; a construction which overcomes the. disadvantages and serious objections. of various methods heretofore employed; that is to say the object of my improved trap'` is to eliminate the possibility of injury to workmen or other individuals, as well as t0V prevent Y damageV to near-.by locomotives, buildings and so forth. f lVhile my improved ticularly adapted for ktrapping the Vwater blown ofi' yfrom locomotives, itvmay equally as well be employed for boilers or apparatus of other description; and the objects and advantages ofmy invention Will all be more fully comprehended from the detailed description of the accompanying drawing, wherein I y i vFigure 1 is a partial sideand partial sectional view of my improved trap. y A

Figure 2 is a cross-sectional view taken substantially onvtheV line 2-2 of Figure 1 looking in the direction of the arrows.

K Figure 3 ris a detail sectional view taken on the line 3 3 of yFigure 1.

My improvedy trap may be constructedof any' suitable material suohas sheet metal and in the particular exemplificationas disclosed in the drawings, consists of vertically disposed wallsvlO and 11-which are preferably bent laterally into more yor lessv spiral form.

In thel drawing I disclose a double trap which is accomplished by arrangingthe spiral or curved wallsvin theV obvolute ma-nner shown, where the wall 10 constitutes a portion of the outer wall ofY one partor side ofthe trap, while the other portion constitutes what may be termed theinner Wall of device is4 more par- 1 Application filed Qctober 22, 1923. Serial No. 67,103.

the other portion 0r sideof the trap; and wall 11 constitutes the inner wall of theV first mentioned portion or sidefof lthe trap Y and also the outer wall .of the second men- 6U tionedv portionaor side Vof the trap. The

v Walls 10 and 11 are preferably so curvedv and arranged as to provide thespiral or .curved Y chambers 12 having the enlarged yor flared intake Vends 13 which are disposed toward 65 opposite sidesl of the trap; while the inner ends of the Walls l() and11 terminate on op-A posite sides of the centeroffthe trap and at i slight distances apart, namely at pointsv adjacent to the vertical airis of the device as`7U shown inFigure 2, in graduallyrestricted discharge ends 14. Y

`The outer longitudinal edges of the walls 10 and ll'are .each preferably provided with a cornerstrip or angle member 15.v extending from top to bottom to reenforce said edges and also to provide means for securing.

afront wall 16 and a plurality .of shutters 171inplace. i, y

The shutters 17 are preferably of sheet 30 metal and arranged one abovethe other in the lapping relationv shownin F iig'ureY 3.

l The spiral orcurved chambers l12 are provided with a front wall orclosure 16, prefs. erably of sheetmetal and extending from topto bottom as shown in Figure 1. .The one'longitudinal edge of the sheet is shown preferablybent back to permit it to be prop 'erly riveted or otherwise suitably secured to the curved portion of wall 11, as shown at 90, 18 in Figure 2, vwhileV the opposite longitudinal edge is ,suitably secured to the angle member 15. y

The frontV walls kor closures 16 (one for eachV flared orifice or intale`,13) is provided lwith a cut-out or openingextendingjpreferably from ay pointsubstantially in line with the.v ground or track level, indicated at 19, to a suitable height slightly below the topof thetrapas shown. l In order to provide suitable mounting for the shutters 17, I show the inner surface` of the front lwall 16 preferably provided with the vvertically arranged angle ironsror Imembersl20, which are suitably slotted or 105 apertured toreceive the trunnions'or rods 21; while the upperends of theV shutters 17? e d are shown bent orcurled backwardly about the rods 21 tosupport--the shutters in place andat the same Swlng inwardly.

time enable the shutters to 1w and closed position through the action ofv gravity and the lower ends are shown bent backward at an angle to overlap the fulcrumed upper end of the adjacent shutter, so as to provide a closure and at the same time a shutter which is adapted to swing quickly into open position, as shown in dotted lines in Figure 3, through the impact or force of the water blown off from the locomotive when the yblow-ofiq cock is opened; the shut-ters automatically returning, through gravity to closed position when the blow-off cock is closed.

The upper ends of the spiral or curved chambers'l2, l2 are closed by a suitable top or clover 22, which is preferably flanged as shown to vpermit the cover to be properly secured to the walls l0 and ll; and the cover 22y is provided with an outlet or pipe 23'to permit the discharge of any vapor which may accumulate in the housing or trap.

The bottom of the trap is'left open as shown in Figure l; the trap being preferably partially buried or made to extend below the surface of the track or ground and to rest on a cement or concrete base as shown at 2a. The base 24, at a central point, namely at a point in axial alignment with the inner orifices of the two spiral chambers and therefore at a point between the inner ends ofthe walls l() and ll, is provided with a drain 25 which may connect with the sewer, or lead to any Vsuitable point, for the purpose ofconveying all water and sedi? ment from the trap.

TNhere my improved trap is intended to be used for trapping or receiving the blownofi' water from locomotives, it is preferable to bury the lower end of the trap a proper distance, say for example three feety in the ground; the trap being vof a height so as to extend sufficiently above the ground, say about nine feet, in order that the shuttered opening may be properly positioned and comparatively large to receive all of the discharged water isuing from the blow-off cocks of a locomotive and for that reason the opening in the front wall is shown eX- tending from a point near the ground level to a short distance belowT the -top of the trap.

The trap illustrated may be termed a double` trap which may be arranged between two adjacent tracks so that a locomotive on either track, or on both, may discharge the blown off water and sediment into the trap at the same time. lt' will' be understood, however, that where a single track is used, the walls 10 and l1 may be formed so as to provide. a single spiral or curvedA chamber and therefore merely a single shuttered intake orifice need ibe provided.v In order to securelyhold the walls in their proper'relationY and to reenforce thebottom'ends thereof, I show the -bottom ends'ofboth walls lO and l1 provided with suitable lugs 26 adapted to receive bolts whereby the walls may be securely fastened to the cement or concretefloor or base 24.

As is apparent from Athe construction shown, the force of the water blown off through the blow-off cocks will be destroyed bythe shutters and curved walls, which latter will also prevent any throwing or blowing` back of the water and as a result my in proved trap will entirely prevent the danger and damage that has heretofore been encountered; the water being caused to travel through a curved path, resulting in its force being spent by the time it reaches the inner ends of the walls, where itwill drop and .pass into the drain 25.

lhave shown what l believe to be the simplest embodiment of my invention, which has been described in terms use d merely as terms of description and not'as terms of limitation, as structural modifications are possible and may be. made without, however, departing from the spirit of my invention.

l. A traprof the character described, comiprising a housing', the side wall whereof is provided with an opening, a drain'or discharge in the bottoni Vof the housing, and gravity controlled VshuttersA for said opening pivotally arranged one above the other with the lower'ends of the respective shutters lapping the pivoted upper ends of the adjacent shutters therebeneath so as to swing inwardly through the action of the blow-off products.

2. A trap of the'character described, comprising a housing provided with an inlet opening inthe side thereof, a discharge or drain in the bottom, vertical walls leading from said inlet opening in a spiral mannerr toward a point in vertical alignment with 'the discharge or drain, and gravity controlled shutters arranged in lapping relation and pivotally disposed across said inlet opening. 1

8. A trap of the characterdescribed, comprising a housing provided with an inlet opening in vthe' side thereof, an outlet or drain, 'curved walls, vleading from the inlet opening, adapted to gradually deflect the blown 'off products toward the outlet or drain, gravity controlled shutters pivotally mountedvi'n lapping relation for automatically closing said inlet opening and adapted to open vthrough the force lof the blown-ofin` products, and a valpor'outlet inthe top o f the housing.

4. A. trap of the character described, coinprising ahousing having vertically disposed 'walls, a waste opening or drain-at the'bottom -of"the'housing, the housing being provided with ali-opening arranged-in a side wall'and in a planeabeve` and tofone.

lside of the waste opening Vor draingthe heusl ng'being provided Withl laterally enrved Walls extending from opposite sides of the second mentioned f opening 'and curving to- Ward Vsaid Waste opening or drain and ter-o minating at opposite sides thereof. Y

Y 5. A trap of the character.'described;ccm-y V prising a housing having vertically disposedl walls, a Waste opening or drain at the bottom, the housing,being'provided with an opening arranged in afsidewallfand in van plane above and to one yside of the Waste opening Ordrain, laterally curved Walls in the housing extending from opposite Sides v of the second mentioned opening and curr# ing toward said Waste opening or drain 'and terminatingvat opposite sides lthere'of, and

' yieldable closurev means for the second ymentioned opening.

6. A trap of the character deseribed,.`

comprising a housing having vertically disposed Walls, av Waste opening or drain at the bottomof the housing, the vhousing being provided With an opening in the side second mentioned opening and' curving to.- f

Ward said Waste opening and terminating at' opposite sides thereoiyand automatic closure means for the second mentioned 'op'enf ing. i. y

A trap of thecharacter (described,L com-v prising a housing provided'with a pair of openings' in opposite side ivalls.in diagonal relation with each other, a Waste opening or 'drain' at the 4bottom of the housing,y ina ver-.

tical plane intermediate of the vertical' planes of the pairuof openings, 'verticallyl arranged .Walls on opposite sides ofveach of' the first mentioned 'openings and curving laterally toward the Waste opening lorl drain?" cHnisTIAN n. MADsnN; 

